.main-timeline{
    width: 80%;
    margin: 20px auto;
    position: relative;
}
.main-timeline:before{
    content: "";
    display: block;
    width: 2px;
    height: 100%;
    background: rgba(255,255,255,0.2);
    margin: 0 0 0 -1px;
    position: absolute;
    top: 0;
    left: 50%;
}
.main-timeline .timeline{
    width: 100%;
    margin-bottom: 20px;
    position: relative;
}
.main-timeline .timeline:after{
    content: "";
    display: block;
    clear: both;
}
.main-timeline .timeline-content{
    width: 40%;
    float: left;
    margin: 5px 0 0 0;
    border-radius: 6px;
}
.main-timeline .date{
    display: block;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: #25303b;
    padding: 5px 0;
    margin: 0 0 0 -36px;
    position: absolute;
    top: 0;
    left: 50%;
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    color: rgba(255,255,255,0.5);
    border: 2px solid rgba(255,255,255,0.2);
    box-shadow: 0 0 0 7px #25303b;
}
.main-timeline .date span{
    display: block;
    text-align: center;
}
.main-timeline .day,
.main-timeline .year{
    font-size: 10px;
}
.main-timeline .month{
    font-size: 18px;
}
.main-timeline .title{
    padding: 15px;
    margin: 0;
    font-size: 20px;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: -1px;
    border-radius: 6px 6px 0 0;
    position: relative;
}
.main-timeline .title:after{
    content: "";
    width: 10px;
    height: 10px;
    position: absolute;
    top: 20px;
    right: -5px;
    transform: rotate(-45deg);
}
.main-timeline .description{
    padding: 15px;
    margin: 0;
    font-size: 14px;
    color: #656565;
    background: #fff;
    border-radius: 0 0 6px 6px;
}
.main-timeline .timeline:nth-child(2n+2) .timeline-content{
    float: right;
}
.main-timeline .timeline:nth-child(2n+2) .title:after{
    left: -5px;
}
.main-timeline .timeline:nth-child(4n+1) .title,
.main-timeline .timeline:nth-child(4n+1) .title:after{
    background: #9f84c4;
}
.main-timeline .timeline:nth-child(4n+2) .title,
.main-timeline .timeline:nth-child(4n+2) .title:after{
    background: #02a2dd;
}
.main-timeline .timeline:nth-child(4n+3) .title,
.main-timeline .timeline:nth-child(4n+3) .title:after{
    background: #58b25e;
}
.main-timeline .timeline:nth-child(4n+4) .title,
.main-timeline .timeline:nth-child(4n+4) .title:after{
    background: #eab715;
}
@media only screen and (max-width: 990px){
    .main-timeline{ width: 100%; }
}
@media only screen and (max-width: 767px){
    .main-timeline:before,
    .main-timeline .date{
        left: 6%;
    }
    .main-timeline .timeline-content{
        width: 85%;
        float: right;
    }
    .main-timeline .title:after{
        left: -5px;
    }
}
@media only screen and (max-width: 480px){
    .main-timeline:before,
    .main-timeline .date{
        left: 12%;
    }
    .main-timeline .timeline-content{
        width: 75%;
    }
    .main-timeline .date{
        width: 60px;
        height: 60px;
        margin-left: -30px;
    }
    .main-timeline .month{
        font-size: 14px;
    }
}